利用高抗金属细菌从模拟废水中吸附去除选定的金属离子

IF 4.3 4区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL Water Reuse Pub Date : 2023-08-25 DOI:10.2166/wrd.2023.059
Ali Hussain, Ali Hasan, S. Sherzada, T. Noor, Shehzad Ahmad, M. Kaoma, E. Elsehly
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引用次数: 0

摘要

在目前需要成本效益高的修复的情况下,我们的研究旨在评估从富含金属的废水中获得的细菌的修复潜力。为了模拟这些条件,我们制备了含有五种有毒金属(Cu、Cr、Ni、Fe和Pb)的废水。从巴基斯坦拉合尔一处著名的排水沟中分离出两种抗金属细菌。这些分离的细菌在表型和基因型上都得到了彻底的表征。随后,将分离的细菌暴露于含有250ppm浓度的上述每种金属的废水溶液中。然后将暴露的分离物孵育15天。5天后,我们测量了细菌分离物对金属的吸收。经过15天的培养期,我们观察到细菌分离物在去除金属方面表现出最大的效率,去除了约47.5%的Fe、77%的Ni、75.75%的Cu、64%的Cr和82.5%的Pb。这些发现对开发环境友好且具有成本效益的金属离子修复策略具有重要意义。
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Biosorptive removal of selected metal ions from simulated wastewater using highly metal-resistant bacteria
In the current scenario of the need for cost-effective remediation, our study aimed to assess the remedial potential of bacteria obtained from metal-rich wastewater. To simulate the conditions, we prepared wastewater containing five toxic metals (Cu, Cr, Ni, Fe, and Pb). Two types of metal-resistant bacteria were isolated from a prominent wastewater drain in Lahore, Pakistan. These isolated bacteria were thoroughly characterized—both phenotypically and genotypically. Subsequently, the isolated bacteria were exposed to the wastewater solution containing each of the aforementioned metals at a concentration of 250 ppm. The exposed isolates were then incubated for a duration of 15 days. After 5 days, we measured the uptake of metals by the bacterial isolates. Following the 15-day incubation period, we observed that the bacterial isolates demonstrated the maximum efficiency in removing metals, with approximately 47.5% of Fe, 77% of Ni, 75.75% of Cu, 64% of Cr, and 82.5% of Pb being removed. These findings have significant implications for the development of environmentally friendly and cost-effective strategies for metal ion remediation.
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来源期刊
Water Reuse
Water Reuse Multiple-
CiteScore
6.20
自引率
8.90%
发文量
0
审稿时长
7 weeks
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